FIELD: physics, atomic power.
SUBSTANCE: invention relates to nuclear fuel and nuclear fuel elements. A metallic fuel rod includes an annular nuclear fuel made of a metal alloy, a zirconium protective cover surrounding and in contact with the nuclear fuel, a cover surrounding the protective cover and a gas collector in the cover. A centre opening provides effective fuel density of 75% or less during irradiation. A mould system and methods of making the annular metallic nuclear fuel are also described.
EFFECT: high nuclear fuel burn-up.
29 cl, 3 dwg
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